Toxic to cats · Foods

Is Leeks toxic to cats?

High severity No safe amount — No amount is considered safe.

Yes. Exposure can cause serious illness and needs prompt veterinary attention.

Symptoms to watch for

  • nausea
  • drooling
  • abdominal pain
  • vomiting
  • diarrhea
  • lethargy
  • pale gums
  • increased heart rate
  • increased respiratory rate
  • weakness
  • exercise intolerance
  • collapse
  • anemia

How vets treat it

Immediate veterinary consultation is required for decontamination, monitoring of red blood cell counts, and supportive care such as IV fluids or blood transfusions if anemia is severe.

Why it's dangerous

Leeks cause oxidative damage to red blood cells, leading to hemolysis (rupture) and subsequent anemia, while also causing gastrointestinal irritation.

Toxic compound: disulfides, thiosulfates

Good to know

Signs of poisoning can be delayed for several days. Cats and Japanese dog breeds like Akita and Shiba Inu are more sensitive.

Sources

This page is informational and is not veterinary advice. If your pet has been exposed to something risky, contact your vet or an animal poison control line right away.

More substances toxic to cats

Full answer in the food guide: Can cats eat onions and garlic? → Alcohol Extreme severity Apricot Pits, Seeds, Leaves, and Stems Extreme severity Caffeine Extreme severity Cherry Pits, Seeds, Leaves, and Stems Extreme severity Everything toxic to cats →

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